The devil is in the details in these kind of studies. What raises red flags for me is how little weight was lost on the low carb diets. This suggests they didn’t really study low carb diets but rather “lowered” carb ones.

Also fruits are very high carb but they’re not all alike. What exactly were the carb loads of the various diets? The abstract isn’t all that revealing. Hopefully the full study becomes public soon.